How did the Emancipation Proclamation change the civil war?

(1 point)
Responses

It increased the number of railroads to transport soldiers.
It increased the number of railroads to transport soldiers.

It provided an additional source of soldiers in the North.
It provided an additional source of soldiers in the North.

It gave the Northerners a cause to fight for.
It gave the Northerners a cause to fight for.

It freed all slaves in the United States.

It provided an additional source of soldiers in the North.

is this right?

Yes, that response is correct. The Emancipation Proclamation provided the opportunity for enslaved African Americans to join the Union army and fight against the Confederacy. This increased the number of soldiers available to the North and had a significant impact on the outcome of the Civil War.